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介绍了一种具有摆杆结构的材料表面冲击试验机，对等离子喷涂Ａｌ２Ｏ３－１３％ＴｉＯ２，Ｃｒ２Ｏ３，ＷＣ－１７％Ｃｏ涂层进行了冲击试验研究，测试了在不同冲击能量下涂层－基体系的冲击响应频谱，借助扫描电镜对涂层冲击后的表面进行了观察，结合表面形貌观察结果对涂层冲击过程中的频域和时域信号进行了对比分析。结果表明，涂层在冲击过程中所表现出的频谱特征和涂层受冲击载荷作用后的形态存在相互对应关系。对于所研究的涂层，存在一个临界转变能量值范围，以小于和大于此能量值范围进行冲击试验时其频谱特征会表现出明显的不同。根据对涂层冲击痕表面形貌的扫描电镜观察，此转变值实际上也对应着涂层开始出现破坏的冲击能量。初步的试验结果表明，将频谱分析用于等离子喷涂涂层冲击性能研究是可行的。
A kind of material surface impact tester with pendulum was introduced. The impact test of plasma spraying Al2O3-13% TiO2, Cr2O3 and WC-17% Co coating was carried out. The effects of different impact energy on the coating- The impact response spectrum of the system was observed. The surface of the coating after impact was observed by scanning electron microscopy. The frequency and time domain signals in the process of coating impact were analyzed in combination with the observation of surface morphology. The results show that the spectral characteristics of the coating during the impact process and the morphology of the coating after being subjected to impact loading exist in correspondence with each other. There is a range of critical transition energy values for the coating under study, and the spectral characteristics of the coatings studied will exhibit markedly different spectral characteristics for impact tests less than and greater than this range of energies. According to the scanning electron microscope observation of the surface morphology of the coating impact marks, the change value actually corresponds to the impact energy of the coating at the beginning of the destruction. Preliminary experimental results show that it is feasible to use spectrum analysis in plasma spray coating impact properties research.